> > So for
> > example, C is not safe because you can derefence a bad pointer etc. and
> > cause a seg fault.
>
>  Run C in a bytecode "safe" environment (there are some C implementations
> with this functionality) - and it will become a "safe language"?

True.
If you choose the following definition "safe : which does not fail" then you
have

C < "safe" C < Lisp < OCaml

But you can't ensure the total safety of your program without using a
theorem prover such as COQ.
Simple OCaml sample :

List.hd [];;

Nicolas Cannasse

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